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采用混合气体保护制备了含Sm、Ce的Mg-2.8Y-0.6Zr-X(Sm、Ce)合金。采用光学金相分析(OM)、扫描电子显微分析(SEM)、X射线衍射分析(XRD)、拉伸等多种分析和测试手段,研究了Sm、Ce对合金的显微组织和力学性能的影响。结果显示,Sm、Ce的加入使得合金晶粒更加细化,组织更加均匀;Sm的加入使合金的抗拉强度提高了48%;Sm与Ce的复合添加恶化合金力学性能,而加入Zn后合金的屈服强度明显提高。
The Sm-Ce-containing Mg-2.8Y-0.6Zr-X (Sm, Ce) alloy was prepared by mixed gas protection. The effects of Sm and Ce on the microstructure and mechanical properties of the alloys were investigated by OM, SEM, XRD and tensile tests. Impact. The results show that with the addition of Sm and Ce, the grain size of the alloy is more refined and the microstructure is more uniform. The addition of Sm increases the tensile strength of the alloy by 48%. The addition of Sm and Ce deteriorates the mechanical properties of the alloy. The yield strength is significantly improved.